baidu palo

be/src/exec/aggregation_node_ir.cpp

@@ -0,0 +1,55 @@
+// Modifications copyright (C) 2017, Baidu.com, Inc.
+// Copyright 2017 The Apache Software Foundation
+
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include "exec/aggregation_node.h"
+
+#include "exec/hash_table.hpp"
+#include "runtime/row_batch.h"
+#include "runtime/runtime_state.h"
+#include "runtime/tuple.h"
+#include "runtime/tuple_row.h"
+
+namespace palo {
+
+void AggregationNode::process_row_batch_no_grouping(RowBatch* batch, MemPool* pool) {
+    for (int i = 0; i < batch->num_rows(); ++i) {
+        update_tuple(_singleton_output_tuple, batch->get_row(i));
+    }
+}
+
+void AggregationNode::process_row_batch_with_grouping(RowBatch* batch, MemPool* pool) {
+    for (int i = 0; i < batch->num_rows(); ++i) {
+        TupleRow* row = batch->get_row(i);
+        Tuple* agg_tuple = NULL;
+        HashTable::Iterator it = _hash_tbl->find(row);
+
+        if (it.at_end()) {
+            agg_tuple = construct_intermediate_tuple();
+            _hash_tbl->insert(reinterpret_cast<TupleRow*>(&agg_tuple));
+        } else {
+            agg_tuple = it.get_row()->get_tuple(0);
+        }
+
+        update_tuple(agg_tuple, row);
+    }
+}
+
+}
+